-james nayloe



2Sheets-Sheet 1.

J. NAYLOR, J1'.,' & P. VOLLM-AR.

Sta-ve'Jointing Machine.

Patented Nov. 20,1877.

m w I Wat): 688

N4 EIfERS. PHOTO L YHUGR 2 Sheets-+Sh'eet 2.

/ J. N AYLOR, Jr; & P. VOLLMAR.

Stave Jo'inting Machine. No. 197,394. Patented Nov. 20,1877.

THOGRAPHER. WAsmNcmN. D c.

JAMES NAYLOR, JR.

' UNlT-ED or noo'nn's'rnn, NEW YORK, AND PampvoLLMAR, OF4SEAFORTH,-ONTARIO,-OANADA."

IMPROVE M'ENT INQSTAvE-J 0| N-Tl N c {MAc'Hi-N-Ee.

Specification forming part of Letters Patent No. 199,394 dated November 20, 1877 application'file'd August 31,1877;

- of the same, reference beinghad to the acc'oiii-- panying drawings, in which Figure l is a front elevation; Fig. 2, an ele- .vation of the knife-bed and componentpart's, as taken from Fig.1 and reversed; Figs-3, a; side elevation; and Fig. 4, an 'elevationtoshow more clearly the arrangement ofthe knife, bed-piece, and form.

We wish it to be understood that weanfine ourselves solely to that class of stave-f jointers commonly-known as .foot-jointers,

and disclaiming that any part of our invention. x has any relation to whatis known as the wheel;

stave-jointer.

The invention consists inthe combination and arrangement of partsin such manner that staves are jointed perfectly according to their 1 width, and also receiving the full inside joint, so essential to the making of good barrels The staves are pressed, in the manner here Iinafter described, intoaa peculiar shape, and while so pressed arejointed.-

Here it must be borne in mind that, although staves are cut on a certain circle, by piling and drying they get flattened out.

We are aware thatexperiments have been tried, and doubtless patents granted, for inventions based on this same principle,all of which have proved unsuccessful whenbrought to actual use.

Before proceeding to describe our invention and its operation, it will be meet here to explain the present almost universal method of jointing, in order to more readily see and comprehend the superiority of our improvement.

The stave is laid flat on a bed-piece, which is curved on its edge to a required bilge. The knife-edge tapers to both ends, and is also curved to coincide with the bed-piece. Every stave is therefore by this means jointed alike, regardless of its width, and great care and judgment'must be e'xejr'cised'in s'ettingupsuch stav'es to form barrels, whereas,by the means and in the mannerhereimfter described shaves are j ointed, and barrels formedwith such staves vhave the bilge always'nniform, regardless of the number an barrelfwhi'ch in the other case must necessarily be a given number toobtain thesamcbirg'e; I Referring" to the accompanying drawings, A represents theffrainej-work'of the machine';'B,

the knife-bed, to' whichffirin'ly" attached, is the straight edged and "faced knife 0, said knife and bed receiving a vertical movement from thefoot-lever' D through the medium of the connecting-rods d d.

Pa'rtbf our invention consists infkeeping this vertical movement in close workingordei', notwithstandingthe frame-work maybe sprung or; twisted by its standing on two-opposite feet instead of all 'four,- which is toooftenthe case in'the using of the's'e'inachines'.

E E are 'slides'working freely in the framework, and here "caubefgiven Imuch bearings'u'rface to prevent wear. Saidslides are pivoted to the knife bed' Bate (see Fig. 2,)

thus severing' the torsional connection and rendering" it impossible for the slides EE to bind inthe wayso'ne-against another.

The knife-bed'B has the slide shaft b secured to it, and which' -is part of it, said slide-shaft working freely through the lower guide. F, which is adj ustable', thereby allowing the knife 0 to be easily set to the bed-piece- H, the pivotse e of the slides E 'E being 'placed'somewhat'abo-vethe edgeof the'knife'O. (See g-2;)

..There"is' -an open spiral spring'around the nicest-eat, which serves 'to more than counterbalance the iknife' and component parts. The upper end of this'spring' presses against the knife-bed B, and the lower against the lower guide F resting on and secured to the framework. 7.

H is the bed-piece on which the stave is placed, and consists of a flexible bar having its upper surface coinciding with the inner circular surface of a barrel. This bed-piece is securely bolted over the form I, (see Fig. 4,) which can be replaced or otherwise altered when a different bilge is required.

It will be necessary here to state that the holding it in place.

bed-piece H, being bent over thesevarious forms, always maintains a straight edge to the knife.

In ordinary machines the knife must be altered the same as the bed-piece. J J J are ribs having their upper surfaces coinciding as the bed-piece to the inner-circular surface of a barrel. These ribs are only to facilitate placing the stave.

K K are gages for keeping the stave, by the aid of the spring k, parallel to the knife 0, and

areprovided with the oii'sets m m for the purpose of holding the stave down, and at its corr'ect position on its outside edge, while the jointing is being done, said gages and offsets being pivoted at L, (see Fig. 3,) the supposed center of a barrel. The ribs J J J and the bed-piece H are laid out from this same center, so that the gages K K and offsets m m move concentric to them.

M M are cams attached and working freely to the frame-work, and are counterbalanced in such manner that said cams are kept up against the projections N N of the knife-bed B said projections operating on the camsv M M in such manner that the stave is first bent over the bed-piece H, and before the knife is through the stavelat the center it is securely held by saidcalns, which retain it during the rest of the operation.

The operation is as follows: The stave to be jointed is placed on the bed-piece H and ribs J J J. The gages K K are brought to bear against the outside edge, the spring k press,- ing against the edge'to be cut. The stave is 'now presented parallel to the knife G, and more or less can be cut off, as is required, the spring 'k yielding sufficiently for this purpose. The

offsets m m overlap the outside edge, thereby Pressure upon the footlever D causes the downward movement of the knife-bed B, which first operates on the cams M M by the projections N N of the knifebed B, said cams pressing down the stave at each end before the jointing commences, and

is so held until completed, after which the stave is gradually released and the operation completed.

It is evident that all joints in a barrel must be parallel to the central axis of said barrel, and also tend to its center. This is a perfect geometrical joint; but in actual working this is not'what is wanted, a fullness on the inside being required to give the barrel its rotundity in trussing and hoopin g. The main part of the knife. 'Here it may be observed that the width of the bed-piece H is double the distance of the two centers 1? and L; therefore the bed-piece can be made of a rectangular bar, and will always maintain the correct shape and form on its two edges. When the bilge or curve of. the bed-piece is the same as the bilge or curve of a barrel, it will be found to be incorrect; but this is remedied by bending the'bed-piece over forms more curved until the desired bilge is obtained, as it is evident that the farther down the ends of staves are forced the fartherwill the ends protrude over the cutting-edge of the bed-piece.

Having thus described our invention, we do not claim jointing according to the geometrical principle, as hereinbefore explained; but

we do claim' the essential differences which produce such satisfactory results, combined with the improvement in the general working and the economical production of this class of stave-jointer.

We claim as our invention 1." In a machine for jointing 'staves, the combination of the flexible bed-pieceH with the form I, and the straight edged and faced knife C, arranged and operating in the manner as herein shown and described.

2. The gages K K, oscillating at L, the imaginary center of the barrel, and having the olfsets m m for holding the stave securely on its bed, substantially as described.

3. The knife-bed B, having projections N N, in combination with the cams M M, constructed in the manner and for the purpose specified.

4. The combination of the knife-bed B, of the pivoted slides E E, of the lower guide F, all arranged substantially in the manner as herein shown and described, and for the purpose specified.

JAS. NAYLOR, JR.

. PHILIP VOLLMAR.

Witnesses:

JOHN GRENwoon, M. F. ODEA. 

